MOBILITY AND EROSION OF THE PRAIA DO MORRO BAY, GUARAPARI-ES, AT CONTRASTING TIME SCALES

Shoreline changes occur at various scales and a better understanding is given by the integrated analysis of the various processes acting on the coast in its scale of events. In the littoral of Guarapari (ES), natural features in regional and local levels amounted to problems arising from occupation and use of the coast, causing pronounced processes of coastal erosion. In this respect, this study aimed to evaluate the natural changes in shoreline from Praia do Morro (Guarapari - ES), which has been significant erosion. The analysis of changes occurred in order to include annual, decadal and multidecadal scale. Data collection was conducted through aerial photographs, which were used in geoprocessing techniques, application of computational models to predict beach stabilization and by the application of methods for obtaining data morphodynamic, the latter in a period of 1 year of monitoring. The highest mobility rates in the range decadal manifested in the beach ends, between 1970 and 1978, however, for the interval from 1970 to 2007, mobility rates have remained basically constant. At the end, methodological validation was found between different scales addressed, and inferred diagnoses based on the results obtained.